Ink feed system

Details Ink feed system Ink feed system

1977-07-18

1978-10-24

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

101336, 118 8, 324229, 346 741, 400119, G01D 1512

Patent

active

041224590

ABSTRACT:
An ink feed system for an electrophoretic printer wherein a ribbon is used to carry ink from an ink supply to the paper upon which it is applied by means of an electric field. A magnetic constituent is added to the ink and a magnetic field is impressed alongside the ribbon and parallel to the surface thereof. A Hall probe positioned in the magnetic field senses perturbations thereof perpendicular to the ribbon induced by the presence of ink on the ribbon. A signal produced by the Hall probe signals the density of the ink upon the ribbon and is utilized for regulating a flow of ink onto the ribbon.

REFERENCES:
patent: 3377598 (1968-04-01), Borman
patent: 3382796 (1968-05-01), Javorik
patent: 3674353 (1972-07-01), Trachtenberg
patent: 3719261 (1973-03-01), Heinzer

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